Alarm clock



FIG. 1 is a front perspective view of an alarm clock showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a back elevational view thereof;

FIG. 5 is a right-side elevational view thereof;

FIG. 6 is a left-side elevational view thereof; and,

FIG. 7 is a bottom plan view thereof. 

I claim the ornamental design for an alarm clock, as shown and described. 